Thought I'd might resurrect this post!
After a few weeks of trying to get AFSoftserial to work, I gave up...horribly defeated
And after doing more research it seems like this path wasn't a good one given the characteristics of the compass.
My work around since my last post has been 2 bluesmirf modems...one connected to an arduino pro mini, the other to the digital compass, but am now revisiting this problem, and wanted to solicit any advice. The arduino and the compass do NOT need to talk to each other...really my only goal is to have both connect to the bluesmirf modem, then pass the info along to my mac. Everything talks TTL. It just seems such a waste to have 2 modems in the same space.
Thanks in advance for any nugget of wisdom!
P.S. Over the past couple days I've also revisited the softSerial idea using "newSoftSerial", but still haven't had any luck.